Letter sheet



1952 v l. M. JOHANSSON 2,580,386

LETTER SHEET Filed June 1 1948 F KG FRU El 7 JOHANSSON on;

' FRU l 0 l A umssorq DEJE Patented Jan. 1, 1952 UNITED STATES PATENT OFFICE LETTER SHEET Ida Martina Johansson, Deje, Sweden Application June 1, 1948, Serial No. 30,448 In Sweden July 14, 1944 1 Claim.

This invention relates to a letter-sheet which, when suitably folded, forms an envelope, and which comprises a preferably rectangular sheet of paper having a space for the address in one of the two upper corners of the sheet, the said address serving simultaneously as an introduction to the letter when it is open, and the said sheet being provided with folding lines arranged to make it possible to close the letter by folding the sheet first twice longitudinally and then by folding the bottom margin portion of the sheet upwards over a part of the paper thus folded and finally by doubling once transversally the paper thus folded, the said sheet being also provided with an oblong gummed flap longitudinally of that part of one side edge of the sheet which is located longitudinally of the portion of the sheet occupied by the address, and which i intended to close the completely folded sheet by sealing it transversally.

The principal object of the invention is to provide a letter-sheet of the type mentioned, which may be opened by one single movement of the hand.

The invention is substantially characterized by the fact that the bottom margin portion of the sheet is not gummed but provided with a gummed flap constituting an extension of the bottom margin portion of the sheet and projecting beyond the side portion of the sheet which is located longitudinally of the portion of the sheet occupied by the address. the said flap being arranged to be pasted on to the oblong flap after the said bottom margin portion has been folded upwards, and by the fact that a thread is disposed longitudinally of the oblong flap in order to make it easier to rip up the flap when the letter is to be opened.

On the accompanying drawings there is shown a constructional form of a letter-sheet according to the invention chosen by way of example.

Fig. 1 shows the letter-sheet in an unfolded position.

Fig. 2 shows the letter-sheet in a folded position.

Figs. 3 and 4 show the letter-sheet in two different folding positions. 1

The letter-sheet consists of a rectangular sheet of paper, which is folded like a bellows, i. e. first in one folding direction longitudinally of the line A, and then in the opposite folding direction 1ongitudinally of the line B. The sheet of paper is then folded longitudinally of the line C which is at right angles to the lines A and B, whereupon a. gummed flap D arranged at the sheet portion limited by the lines A and C, which is intended to bear the address, is folded over one open edge of the folded sheet and is pasted on to it. The

2 folding of the sheet should be made in such a Way that a free edge strip E will appear, which is secured by means of a gummed flap F.

To open the letter-sheet a thread G fastened to the flap D is torn away, and the envelope is opened. When the paper sheet has been ripped up it will have a square or rectangular form.

On the part of the paper sheet which is above the line A will be the name and address which serves also as an introduction to the writing on the paper sheet.

What I claim is:

A letter-sheet comprising a rectangular sheet of paper having one transverse and three longitudinal folding lines on a surface thereof, said folding lines dividing said sheet into six rectangular sections for writing, a space in an upper corner section adapted for having an address, a bottom margin portion extending beyond said six sections, an oblong gummed flap extending along the said edge of that section adapted for carrying the address, and being gummed on the opposite side therefrom, a gummed flap on said bottom margin-portion constituting a lateral extension thereof in alignment with said oblong gummed flap and being gummed on the opposite side therefrom, and a thread disposed longitudinally of said oblong gummed flap whereby said sheet upon being folded along the longitudinal folding lines in opposite directions and said bottom margin portion being folded back over the folded sections and said sheet being subsequently folded along said transverse line can be sealed by folding said oblong gummed flap over one open edge of the folded sheet and sealed thereto and folding the gummed flap on said bottom margin portion over and sealed onto said oblong flap, said thread constituting severing means through all the sealed areas for facilitating opening of the sheet, the address serving simultaneously as an introduction to the letter when opened.

IDA MARTINA JOHANSSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 622,598 Bragg Apr. 4, 1899 1,803,704 Hardie May 5, 1931 1,954,271 Surft Apr. 10, 1934 FOREIGN PATENTS Number Country Date 46,148 Denmark Aug. 24, 1932 327,588 Germany May 14, 1919 

